Low-cost assembly of UHF RFID chips and flexible substrate antennas by magnetic coupling approach

Alimenti, F.; Virili, M.; Mezzanotte, P.; Palazzari, V.; Tentzeris, M. M.; Roselli, L.

doi:10.1109/mwsym.2010.5517576

Cited by 4 publications

(6 citation statements)

References 1 publication

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“…The paper to Si transformer parameters are n = 0:711; k = 0:544; R = 2:7 k; L = 9:7 nH; R = 0:3 ; C = 55 fF; L = 19:3 nH; R = 5:2 ; C = 65 fF; and C = 100 fF. After [4].…”

Section: Coupling Transformermentioning

confidence: 99%

“…In this way, the need for galvanic connection between antenna and chip is avoided. After [4]. a surface that has correspondingly shaped holes or receptors on it and into which the devices settle.…”

mentioning

confidence: 99%

“…To this purpose, the CMOS chip is magnetically coupled to the antenna realized on the flexible substrate, thus eliminating all the galvanic contacts between the chip and the antenna itself [3], [4]. The magnetic coupling is established, as in Fig.…”

mentioning

confidence: 99%

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A New Contactless Assembly Method for Paper Substrate Antennas and UHF RFID Chips

Alimenti

Virili

Orecchini

et al. 2011

IEEE Trans. Microwave Theory Techn.

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Abstract-This paper deals with a low-cost method for the assembly of flexible substrate antennas and UHF RF identification silicon (Si) chips. Such a method exploits a magnetic coupling mechanism, thus not requiring for galvanic contacts between the Si chip and antenna itself. The magnetic coupling is established by a planar transformer, the primary and secondary windings of which are implemented on flexible substrate and Si chip, respectively. As a result, the Si chip can be assembled on the antenna with a mere placing and gluing process. First, the idea has been validated by theory. Electromagnetic simulations of a square heterogeneous transformer (1.0-mm side) show a maximum available power gain (MAG) of 0.4 dB at 868 MHz. In addition, the heterogeneous transformer is also quite tolerant with respect to misalignment between primary and secondary. An offset error of 150 m reduces the MAG to 0.5 dB. A sub-optimal matching strategy, exploiting a simple on-chip capacitor, is then developed for antennas with 50-input impedances. Finally, the idea has been experimentally validated exploiting printed circuit board (PCB) prototypes. A PCB transformer (1.5-mm side) and a transformer rectifier (two-diode Dickson multiplier) have been fabricated and tested. Measurements indicates a MAG of 0.3 dB at 868 MHz for the transformer and the capability of the developed rectifier to supply a 220-k load at 1.5 V with a 2-dBm input power.

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“…The paper to Si transformer parameters are n = 0:711; k = 0:544; R = 2:7 k; L = 9:7 nH; R = 0:3 ; C = 55 fF; L = 19:3 nH; R = 5:2 ; C = 65 fF; and C = 100 fF. After [4].…”

Section: Coupling Transformermentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

A New Contactless Assembly Method for Paper Substrate Antennas and UHF RFID Chips

Alimenti

Virili

Orecchini

et al. 2011

IEEE Trans. Microwave Theory Techn.

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“…Wireless power transfer technologies can significantly enhance the usefulness of electronic devices or modules, and make them more practical and safer. WPT technology applications include microwave power transmission using gigahertz-frequency-range solar power satellites [ 22 , 23 , 24 ], radio-frequency identification (RFID) [ 25 ], energy harvesting, and magnetic resonant WPT which operate in the kilohertz and megahertz ranges [ 26 , 27 , 28 ]. The power transfer efficiency of gigahertz-frequency WPT systems are currently greater than 70% [ 22 ], while the power transfer efficiency in the kilohertz and megahertz ranges are in the range of 83%–90% [ 28 ].…”

Section: Introductionmentioning

confidence: 99%

Miniaturization of Implantable Micro-Robot Propulsion Using a Wireless Power Transfer System

et al. 2017

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This paper presents an efficient coil design for a mm-sized micro-robot which generates a propulsion force and torque and receives electrical energy using a wireless power transfer system. To determine the most efficient coil structures and produce propulsion and torque on the micro-robot, both helical and spiral coil modeling was conducted, and analytical formulations of the propulsion force and torque were derived for helical and spiral coil structures. Additionally, the dominant dimensional factors for determining propulsion and coil torque were analyzed in detail. Based on the results, an optimum coil structure for generating maximum force on the micro-robot was developed and is herein presented with dimensional analysis. Simulations and experiments were also conducted to verify the design, and good agreement was achieved. A 3-mm micro-robot that simultaneously generated a propulsion force and torque and received electrical energy via wireless power transfer was successfully fabricated using the proposed method and verified.

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“…Heterogeneous integration onto a carrier substrate is therefore regarded as a promising alternative [3]. Advanced devices benefiting from hybrid integration of separately manufactured subsystems include, among others, radio-frequency communication units [4], addressable sensor arrays, and light emitting diodes [5]. A. Dietzel is with the Institute of Microtechnology, Technical University of Braunschweig, 38124 Braunschweig, Germany (e-mail: a.dietzel@tu-braunschweig.de).…”

Section: Introductionmentioning

confidence: 99%

Capillary Gripping and Self-Alignment: A Route Toward Autonomous Heterogeneous Assembly

et al. 2015

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Abstract-We present a pick-and-place approach driven by capillarity for highly precise and cost-effective assembly of mesoscopic components onto structured substrates. Based on competing liquid bridges, the technology seamlessly combines programmable capillary grasping, handling and passive releasing with capillary self-alignment of components onto pre-patterned assembly sites. The performance of the capillary gripper is illustrated by comparing the measured lifting capillary forces with those predicted by a hydrostatic model of the liquid meniscus. Two component release strategies, based on either axial or shear capillary forces, are discussed and experimentally validated. The releaseand-assembly process developed for a continuously moving assembly substrate provides a roll-to-roll-compatible technology for high-resolution and high-throughput component assembly.

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Low-cost assembly of UHF RFID chips and flexible substrate antennas by magnetic coupling approach

Cited by 4 publications

References 1 publication

A New Contactless Assembly Method for Paper Substrate Antennas and UHF RFID Chips

A New Contactless Assembly Method for Paper Substrate Antennas and UHF RFID Chips

Miniaturization of Implantable Micro-Robot Propulsion Using a Wireless Power Transfer System

Capillary Gripping and Self-Alignment: A Route Toward Autonomous Heterogeneous Assembly

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